TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 1, 8:00 AM EST
Polymarket
This market will resolve to the temperature range that contains the highest temperature recorded at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 1 Jun '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Adolfo Suárez Madrid-Barajas Airport Station, available here: https://www.wunderground.com/history/daily/es/madrid/LEMD. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, the highest temperature in Madrid on June 1 is priced through outcome shares representing specific temperature ranges or thresholds. Traders buy and sell shares corresponding to their belief about whether the actual high will fall into each bracket. The price of each share reflects the market's collective probability estimate. As new information emerges—weather model updates, seasonal patterns, or climate anomalies—traders adjust positions, moving prices to reflect changing expectations about Madrid's June 1 conditions.
The market resolves on Jun 1, 2026, after the highest temperature in Madrid on June 1, 2026 has been recorded. Resolution is determined by the official temperature reading from a designated meteorological source for that date. Once the actual high temperature is confirmed, the outcome is settled and traders' positions are finalized based on which temperature bracket or outcome correctly matched the recorded value.
Major weather pattern shifts, including changes to Atlantic pressure systems, heat waves, or cold fronts affecting Western Europe, can significantly move odds. Updated seasonal climate forecasts from meteorological agencies may signal warmer or cooler-than-normal conditions for early June. Real-time weather model runs closer to June 1 will refine temperature expectations. Long-range climate indices, such as the North Atlantic Oscillation or Mediterranean sea-surface temperatures, influence European weather and could shift trader positioning as new data arrives.